Yes. You will have to put the source code elsewhere, however by registering on the Hosted projects section you will be access to an issue tracker and your package will be easily downloadable into GNU Smalltalk.

The code will be hosted elsewhere; a common choice is GitHub. You will have to provide a link to the repository; this is done through an additional level of indirection.

Many interesting texts are published in the blog section of this site. If you come across anything useful, make sure to note it in the wiki so that other people can peruse it.

Please open a bug report. You do not need to include the path to the spam comments or pages if they were left in the last few days.

Anyway, spammers have little or nothing to gain, since links within comments and wiki pages are marked as nofollow.

Most likely, the wiki is the correct place. In particular, there is an examples page.

Assuming you have already downloaded GNU Smalltalk and tried it out a little, you can join the GNU Smalltalk mailing list. That's the primary means to share your experience about GNU Smalltalk, or otherwise assist the GNU Smalltalk project with your development skills.

You can discuss things freely with other developers and enthusiasts on the #gnu-smalltalk IRC channel on Freenode.